/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c


--------------------------------------------------------------------------------


This is Ultimate 0.2.5-dev-df9f019-m
[2024-11-05 20:30:07,197 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-05 20:30:07,276 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-05 20:30:07,284 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-05 20:30:07,284 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-05 20:30:07,317 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-05 20:30:07,317 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-05 20:30:07,318 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-05 20:30:07,318 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-05 20:30:07,319 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-05 20:30:07,320 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-05 20:30:07,320 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-05 20:30:07,320 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-05 20:30:07,321 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-05 20:30:07,321 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-05 20:30:07,321 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-05 20:30:07,321 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-05 20:30:07,322 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-05 20:30:07,324 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-05 20:30:07,325 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-05 20:30:07,325 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-05 20:30:07,328 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-05 20:30:07,328 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-05 20:30:07,328 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-05 20:30:07,329 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-05 20:30:07,329 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-05 20:30:07,329 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-05 20:30:07,329 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-05 20:30:07,329 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-05 20:30:07,330 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-05 20:30:07,330 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-05 20:30:07,330 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-05 20:30:07,330 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-05 20:30:07,330 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-05 20:30:07,331 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-05 20:30:07,331 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-05 20:30:07,332 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-05 20:30:07,332 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-05 20:30:07,333 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-05 20:30:07,333 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-05 20:30:07,333 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-05 20:30:07,333 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-05 20:30:07,333 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-05 20:30:07,333 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-05 20:30:07,334 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-05 20:30:07,569 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-05 20:30:07,596 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-05 20:30:07,600 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-05 20:30:07,601 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-05 20:30:07,601 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-05 20:30:07,602 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c
[2024-11-05 20:30:08,966 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-05 20:30:09,161 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-05 20:30:09,161 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c
[2024-11-05 20:30:09,168 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24d185139/9ebf609857704d61b2f9de23c40d50e2/FLAG749918c8b
[2024-11-05 20:30:09,542 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24d185139/9ebf609857704d61b2f9de23c40d50e2
[2024-11-05 20:30:09,544 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-05 20:30:09,546 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-05 20:30:09,547 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-05 20:30:09,547 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-05 20:30:09,554 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-05 20:30:09,554 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:30:09" (1/1) ...
[2024-11-05 20:30:09,555 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e8e458f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:09, skipping insertion in model container
[2024-11-05 20:30:09,555 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:30:09" (1/1) ...
[2024-11-05 20:30:09,571 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-05 20:30:09,750 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c[387,400]
[2024-11-05 20:30:09,774 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-05 20:30:09,786 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-05 20:30:09,799 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c[387,400]
[2024-11-05 20:30:09,808 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-05 20:30:09,826 INFO  L204         MainTranslator]: Completed translation
[2024-11-05 20:30:09,826 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:09 WrapperNode
[2024-11-05 20:30:09,826 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-05 20:30:09,827 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-05 20:30:09,828 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-05 20:30:09,828 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-05 20:30:09,835 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:09" (1/1) ...
[2024-11-05 20:30:09,843 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:09" (1/1) ...
[2024-11-05 20:30:09,891 INFO  L138                Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57
[2024-11-05 20:30:09,892 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-05 20:30:09,892 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-05 20:30:09,892 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-05 20:30:09,893 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-05 20:30:09,902 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:09" (1/1) ...
[2024-11-05 20:30:09,903 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:09" (1/1) ...
[2024-11-05 20:30:09,905 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:09" (1/1) ...
[2024-11-05 20:30:09,917 INFO  L175           MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2].
[2024-11-05 20:30:09,917 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:09" (1/1) ...
[2024-11-05 20:30:09,918 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:09" (1/1) ...
[2024-11-05 20:30:09,924 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:09" (1/1) ...
[2024-11-05 20:30:09,931 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:09" (1/1) ...
[2024-11-05 20:30:09,933 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:09" (1/1) ...
[2024-11-05 20:30:09,934 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:09" (1/1) ...
[2024-11-05 20:30:09,937 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-05 20:30:09,939 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-05 20:30:09,939 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-05 20:30:09,939 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-05 20:30:09,940 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:09" (1/1) ...
[2024-11-05 20:30:09,945 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-05 20:30:09,956 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-05 20:30:09,970 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-05 20:30:09,972 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-05 20:30:10,002 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-05 20:30:10,002 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0
[2024-11-05 20:30:10,002 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1
[2024-11-05 20:30:10,002 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-05 20:30:10,002 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-11-05 20:30:10,004 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-05 20:30:10,004 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-05 20:30:10,004 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-05 20:30:10,004 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0
[2024-11-05 20:30:10,004 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1
[2024-11-05 20:30:10,004 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-05 20:30:10,086 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-05 20:30:10,088 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-05 20:30:10,245 INFO  L?                        ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2024-11-05 20:30:10,245 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-05 20:30:10,262 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-05 20:30:10,262 INFO  L316             CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-05 20:30:10,262 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:30:10 BoogieIcfgContainer
[2024-11-05 20:30:10,262 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-05 20:30:10,266 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-05 20:30:10,267 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-05 20:30:10,269 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-05 20:30:10,269 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 08:30:09" (1/3) ...
[2024-11-05 20:30:10,270 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222213b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:30:10, skipping insertion in model container
[2024-11-05 20:30:10,270 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:09" (2/3) ...
[2024-11-05 20:30:10,270 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222213b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:30:10, skipping insertion in model container
[2024-11-05 20:30:10,270 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:30:10" (3/3) ...
[2024-11-05 20:30:10,272 INFO  L112   eAbstractionObserver]: Analyzing ICFG verisec_sendmail_tTflag_arr_one_loop.c
[2024-11-05 20:30:10,288 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-05 20:30:10,289 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-05 20:30:10,352 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-05 20:30:10,359 INFO  L333      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5b98990f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-05 20:30:10,359 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-05 20:30:10,362 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-05 20:30:10,367 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-05 20:30:10,367 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-05 20:30:10,368 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-05 20:30:10,369 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-05 20:30:10,374 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-05 20:30:10,374 INFO  L85        PathProgramCache]: Analyzing trace with hash 212076531, now seen corresponding path program 1 times
[2024-11-05 20:30:10,382 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-05 20:30:10,383 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989867905]
[2024-11-05 20:30:10,383 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-05 20:30:10,385 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-05 20:30:10,385 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-05 20:30:10,388 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-11-05 20:30:10,390 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2024-11-05 20:30:10,466 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-05 20:30:10,468 INFO  L255         TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-05 20:30:10,472 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-05 20:30:10,498 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-05 20:30:10,498 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-05 20:30:10,509 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-05 20:30:10,510 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-05 20:30:10,510 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989867905]
[2024-11-05 20:30:10,511 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [989867905] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-05 20:30:10,511 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-05 20:30:10,511 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2024-11-05 20:30:10,512 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384032185]
[2024-11-05 20:30:10,513 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-05 20:30:10,516 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-05 20:30:10,516 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-05 20:30:10,538 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-05 20:30:10,539 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-05 20:30:10,541 INFO  L87              Difference]: Start difference. First operand  has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-05 20:30:10,604 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-05 20:30:10,604 INFO  L93              Difference]: Finished difference Result 31 states and 45 transitions.
[2024-11-05 20:30:10,605 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-05 20:30:10,607 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2024-11-05 20:30:10,607 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-05 20:30:10,612 INFO  L225             Difference]: With dead ends: 31
[2024-11-05 20:30:10,612 INFO  L226             Difference]: Without dead ends: 17
[2024-11-05 20:30:10,614 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-05 20:30:10,617 INFO  L432           NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-05 20:30:10,618 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 25 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-05 20:30:10,631 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2024-11-05 20:30:10,638 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13.
[2024-11-05 20:30:10,639 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-05 20:30:10,640 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions.
[2024-11-05 20:30:10,641 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8
[2024-11-05 20:30:10,641 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-05 20:30:10,641 INFO  L471      AbstractCegarLoop]: Abstraction has 13 states and 14 transitions.
[2024-11-05 20:30:10,641 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-05 20:30:10,642 INFO  L276                IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions.
[2024-11-05 20:30:10,642 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2024-11-05 20:30:10,642 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-05 20:30:10,642 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-05 20:30:10,645 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0
[2024-11-05 20:30:10,843 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-05 20:30:10,844 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-05 20:30:10,844 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-05 20:30:10,844 INFO  L85        PathProgramCache]: Analyzing trace with hash 780776823, now seen corresponding path program 1 times
[2024-11-05 20:30:10,845 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-05 20:30:10,845 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488308744]
[2024-11-05 20:30:10,845 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-05 20:30:10,845 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-05 20:30:10,845 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-05 20:30:10,848 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-11-05 20:30:10,849 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2024-11-05 20:30:10,908 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-05 20:30:10,910 INFO  L255         TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-05 20:30:10,912 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-05 20:30:10,978 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-05 20:30:10,978 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-05 20:30:11,044 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-05 20:30:11,045 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-05 20:30:11,045 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488308744]
[2024-11-05 20:30:11,047 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [488308744] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-05 20:30:11,047 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-05 20:30:11,047 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2024-11-05 20:30:11,047 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649155221]
[2024-11-05 20:30:11,047 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-05 20:30:11,048 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-05 20:30:11,049 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-05 20:30:11,049 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-05 20:30:11,050 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2024-11-05 20:30:11,052 INFO  L87              Difference]: Start difference. First operand 13 states and 14 transitions. Second operand  has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-05 20:30:11,190 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-05 20:30:11,190 INFO  L93              Difference]: Finished difference Result 31 states and 38 transitions.
[2024-11-05 20:30:11,192 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-05 20:30:11,192 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12
[2024-11-05 20:30:11,193 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-05 20:30:11,193 INFO  L225             Difference]: With dead ends: 31
[2024-11-05 20:30:11,193 INFO  L226             Difference]: Without dead ends: 25
[2024-11-05 20:30:11,194 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90
[2024-11-05 20:30:11,196 INFO  L432           NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-05 20:30:11,197 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 22 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-05 20:30:11,199 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2024-11-05 20:30:11,205 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21.
[2024-11-05 20:30:11,206 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-05 20:30:11,206 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions.
[2024-11-05 20:30:11,206 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 12
[2024-11-05 20:30:11,207 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-05 20:30:11,207 INFO  L471      AbstractCegarLoop]: Abstraction has 21 states and 22 transitions.
[2024-11-05 20:30:11,209 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-05 20:30:11,209 INFO  L276                IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions.
[2024-11-05 20:30:11,210 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2024-11-05 20:30:11,210 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-05 20:30:11,210 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-05 20:30:11,214 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0
[2024-11-05 20:30:11,410 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-05 20:30:11,411 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-05 20:30:11,412 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-05 20:30:11,412 INFO  L85        PathProgramCache]: Analyzing trace with hash -2109281665, now seen corresponding path program 2 times
[2024-11-05 20:30:11,412 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-05 20:30:11,412 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936882113]
[2024-11-05 20:30:11,413 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-05 20:30:11,413 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-05 20:30:11,413 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-05 20:30:11,416 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-11-05 20:30:11,418 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2024-11-05 20:30:11,492 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-05 20:30:11,495 INFO  L255         TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-05 20:30:11,498 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-05 20:30:11,634 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-05 20:30:11,634 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-05 20:30:11,824 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-05 20:30:11,824 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-05 20:30:11,824 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936882113]
[2024-11-05 20:30:11,824 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [936882113] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-05 20:30:11,824 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-05 20:30:11,825 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16
[2024-11-05 20:30:11,825 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675421926]
[2024-11-05 20:30:11,825 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-05 20:30:11,825 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-05 20:30:11,825 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-05 20:30:11,826 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-05 20:30:11,828 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240
[2024-11-05 20:30:11,828 INFO  L87              Difference]: Start difference. First operand 21 states and 22 transitions. Second operand  has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-05 20:30:12,071 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-05 20:30:12,071 INFO  L93              Difference]: Finished difference Result 41 states and 49 transitions.
[2024-11-05 20:30:12,074 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2024-11-05 20:30:12,075 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20
[2024-11-05 20:30:12,075 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-05 20:30:12,076 INFO  L225             Difference]: With dead ends: 41
[2024-11-05 20:30:12,076 INFO  L226             Difference]: Without dead ends: 35
[2024-11-05 20:30:12,076 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342
[2024-11-05 20:30:12,077 INFO  L432           NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-05 20:30:12,078 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 44 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-05 20:30:12,080 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2024-11-05 20:30:12,087 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31.
[2024-11-05 20:30:12,087 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-05 20:30:12,088 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions.
[2024-11-05 20:30:12,088 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 20
[2024-11-05 20:30:12,088 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-05 20:30:12,089 INFO  L471      AbstractCegarLoop]: Abstraction has 31 states and 32 transitions.
[2024-11-05 20:30:12,089 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-05 20:30:12,089 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions.
[2024-11-05 20:30:12,090 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2024-11-05 20:30:12,090 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-05 20:30:12,090 INFO  L215           NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-05 20:30:12,095 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0
[2024-11-05 20:30:12,291 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-05 20:30:12,291 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-05 20:30:12,292 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-05 20:30:12,292 INFO  L85        PathProgramCache]: Analyzing trace with hash 2041591177, now seen corresponding path program 3 times
[2024-11-05 20:30:12,292 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-05 20:30:12,292 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578612384]
[2024-11-05 20:30:12,293 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-05 20:30:12,293 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-05 20:30:12,293 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-05 20:30:12,296 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-11-05 20:30:12,297 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2024-11-05 20:30:12,366 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-05 20:30:12,368 INFO  L255         TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-05 20:30:12,370 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-05 20:30:12,398 INFO  L134       CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked.
[2024-11-05 20:30:12,399 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-05 20:30:12,422 INFO  L134       CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked.
[2024-11-05 20:30:12,422 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-05 20:30:12,422 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578612384]
[2024-11-05 20:30:12,422 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [578612384] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-05 20:30:12,422 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-05 20:30:12,423 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-11-05 20:30:12,423 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306020887]
[2024-11-05 20:30:12,423 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-05 20:30:12,423 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-05 20:30:12,423 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-05 20:30:12,424 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-05 20:30:12,424 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-05 20:30:12,424 INFO  L87              Difference]: Start difference. First operand 31 states and 32 transitions. Second operand  has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-05 20:30:12,464 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-05 20:30:12,465 INFO  L93              Difference]: Finished difference Result 38 states and 40 transitions.
[2024-11-05 20:30:12,465 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-05 20:30:12,465 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30
[2024-11-05 20:30:12,465 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-05 20:30:12,466 INFO  L225             Difference]: With dead ends: 38
[2024-11-05 20:30:12,466 INFO  L226             Difference]: Without dead ends: 33
[2024-11-05 20:30:12,466 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-05 20:30:12,467 INFO  L432           NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-05 20:30:12,467 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-05 20:30:12,468 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2024-11-05 20:30:12,474 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2024-11-05 20:30:12,474 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-05 20:30:12,475 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions.
[2024-11-05 20:30:12,475 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30
[2024-11-05 20:30:12,475 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-05 20:30:12,476 INFO  L471      AbstractCegarLoop]: Abstraction has 33 states and 34 transitions.
[2024-11-05 20:30:12,476 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-05 20:30:12,476 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions.
[2024-11-05 20:30:12,476 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2024-11-05 20:30:12,477 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-05 20:30:12,477 INFO  L215           NwaCegarLoop]: trace histogram [11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-05 20:30:12,482 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2024-11-05 20:30:12,680 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-05 20:30:12,680 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-05 20:30:12,681 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-05 20:30:12,681 INFO  L85        PathProgramCache]: Analyzing trace with hash -777640855, now seen corresponding path program 1 times
[2024-11-05 20:30:12,681 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-05 20:30:12,681 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713865907]
[2024-11-05 20:30:12,681 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-05 20:30:12,682 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-05 20:30:12,682 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-05 20:30:12,684 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-11-05 20:30:12,685 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2024-11-05 20:30:12,769 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-05 20:30:12,773 INFO  L255         TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-05 20:30:12,777 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-05 20:30:13,062 INFO  L134       CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked.
[2024-11-05 20:30:13,062 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-05 20:30:13,354 INFO  L134       CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked.
[2024-11-05 20:30:13,355 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-05 20:30:13,355 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713865907]
[2024-11-05 20:30:13,355 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1713865907] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-05 20:30:13,355 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-05 20:30:13,355 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-11-05 20:30:13,355 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403182431]
[2024-11-05 20:30:13,355 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-05 20:30:13,356 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-05 20:30:13,356 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-05 20:30:13,359 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-05 20:30:13,359 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2024-11-05 20:30:13,359 INFO  L87              Difference]: Start difference. First operand 33 states and 34 transitions. Second operand  has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-05 20:30:13,904 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-05 20:30:13,905 INFO  L93              Difference]: Finished difference Result 44 states and 48 transitions.
[2024-11-05 20:30:13,905 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-11-05 20:30:13,905 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32
[2024-11-05 20:30:13,905 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-05 20:30:13,906 INFO  L225             Difference]: With dead ends: 44
[2024-11-05 20:30:13,906 INFO  L226             Difference]: Without dead ends: 37
[2024-11-05 20:30:13,906 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132
[2024-11-05 20:30:13,907 INFO  L432           NwaCegarLoop]: 6 mSDtfsCounter, 14 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-05 20:30:13,908 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 29 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-05 20:30:13,908 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2024-11-05 20:30:13,917 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37.
[2024-11-05 20:30:13,917 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-05 20:30:13,918 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions.
[2024-11-05 20:30:13,918 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 32
[2024-11-05 20:30:13,918 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-05 20:30:13,918 INFO  L471      AbstractCegarLoop]: Abstraction has 37 states and 38 transitions.
[2024-11-05 20:30:13,918 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-05 20:30:13,919 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions.
[2024-11-05 20:30:13,919 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2024-11-05 20:30:13,919 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-05 20:30:13,919 INFO  L215           NwaCegarLoop]: trace histogram [11, 11, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-05 20:30:13,925 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2024-11-05 20:30:14,120 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-05 20:30:14,120 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-05 20:30:14,121 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-05 20:30:14,121 INFO  L85        PathProgramCache]: Analyzing trace with hash 2139052585, now seen corresponding path program 2 times
[2024-11-05 20:30:14,121 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-05 20:30:14,121 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381469286]
[2024-11-05 20:30:14,121 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-05 20:30:14,121 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-05 20:30:14,122 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-05 20:30:14,124 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-11-05 20:30:14,126 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2024-11-05 20:30:14,237 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-05 20:30:14,241 INFO  L255         TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 28 conjuncts are in the unsatisfiable core
[2024-11-05 20:30:14,245 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-05 20:30:57,314 INFO  L134       CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 20 refuted. 1 times theorem prover too weak. 121 trivial. 0 not checked.
[2024-11-05 20:30:57,314 INFO  L311         TraceCheckSpWp]: Computing backward predicates...